What are API Gateway Policies? Use Cases and Examples

An API Gateway serves as a crucial component in modern application architecture by acting as a reverse proxy that routes requests to backend services while offering additional features such as security, monitoring, and rate limiting. API Gateway policies centralize governance for APIs by allowing cross-cutting concerns to be configured at the gateway level, which enforces consistent standards across all proxied APIs. This centralized approach contrasts with API policies that attach to individual APIs, as gateway policies apply blanket rules, like authentication and rate limiting, ensuring uniform security and operational practices. Implementing gateway policies streamlines API management by reducing duplicate logic, enhancing governance, and accelerating API delivery through reusable, modular configurations. By applying gateway policies, organizations can maintain consistent security and operational protocols, making APIs easier to manage and develop while ensuring compliance and reliability. These policies are managed like software products, emphasizing modular design, thorough testing, and lifecycle management, ultimately forming the foundation for a seamless, governed API ecosystem.